1

指一類人或事，相當于a kind of

A plane is a machine that can  fly.

2

第一次提及某人某物，非特指

A boy is waiting for you.有個男孩在等你。

3

表示“每一”相當于every，one

We study eight hours a day.

4

表示“相同”相當于the same

We are nearly of an age.

5

用于人名前，表示不認識此人或與某名人有類似性質(zhì)的人或事

— Hello, could I speak to Mr. Smith?

—Sorry, wrong number. There isn't______ Mr.  Smith here.

A. 不填     B.  a         C. the          D. one

That boy is rather a Lei Feng.（活雷鋒）

6

用于固定詞組中

a couple of, a bit, once upon a  time, in a hurry, have a walk, many a time

7

用于quite, rather, many, half, what, such之后

This room is rather a big one.

8

用于so(as, too, how)+形容詞之后

She is as clever a girl as you  can wish to meet.

9

用于抽象名詞具體化的名詞前

success(抽象名詞)→a success(具體化) 成功的人或事

a failure 失敗的人或事       a shame  帶來恥辱的人或事

a pity  可惜或遺憾的事      a must 必需必備的事

a good knowledge of 精通掌握某一方面的知識

1

表示某一類人或物

In many places in  China, ___ bicycle is still ___ popular means of transportation.

A. a; the        B. /; a        C. the; a      D. the; the

2

用于世上獨一無二的事物名詞前

the universe, the moon, the  Pacific Ocean

3

表示說話雙方都了解的或上文提到過的人或事

Would you mind opening the door?  

4

用于演奏樂器

play the violin, play the guitar

5

用于形容詞和分詞前表示一類人

the reach, the living, the  wounded

6

表示“一家人”或“夫婦”（對比上文的不定冠詞用法5）

—Could you tell me the way to ____ Johnsons,  please?
 —Sorry, we don’t have ____  Johnson here in the village.
 A. the; the             B. the; a         C. /; the    D.  the; /

7

用于序數(shù)詞和形容詞副詞比較級最高級前

He is the taller of the two  children.

8

用于國家黨派等以及江河湖海，山川群島的名詞前

the United States, the Communist  Party of China, the French

9

用于表示發(fā)明物的單數(shù)名詞前

The compass was invented in  China.

10

在逢十的復數(shù)數(shù)詞之前，指世紀的某個年代

in the 1990’s(二十世紀九十年代)

11

用于表示度量單位的名詞前

I hired the car by the hour.

12

用于方位名詞，身體部位名詞

He patted me on the shoulder.

1

專有名詞，物質(zhì)名詞，抽象名詞，人名地名等名詞前

Beijing University, Jack, China, love, air

2

名詞前有this, my, whose, some, no, each, every等限制

I want this book, not that one.  /  Whose purse is this?

3

季節(jié)，月份，星期，節(jié)假日，一日三餐前

March, Sunday, National Day, spring

4

表示職位，身份，頭銜的名詞前

Lincoln was made President of America.

5

表示球類，棋類等運動的名詞前

He likes playing football/chess.

6

與by連用表示交通方式的名詞前

We went right round to the west  coast by ______ sea instead of driving across ______ continent.

A. the; the       B.不填；the    C. the;不填     D.  不填；不填

7

以and連接的兩個相對的名詞并用時

husband and wife, knife and  fork, day and night

8

表示泛指的復數(shù)名詞前

Horses are useful animals.